Legionnaire's disease can be life-threatening. The death rate is higher in patients with other diseases. The death rate for patients who develop Legionnaire's disease while in the hospital is close to 50%, especially when antibiotics are started late.

Complications:

Lung failure

Death

Calling your health care provider:

Make an appointment with your health care provider if you have any type of breathing problem.

Prevention:

Treating contaminated water delivery systems can prevent the spread of disease.